UMTS/HSPA Module Series
WCDMA UGxx AT Commands Manual
WCDMA_UGxx_AT_Commands_Manual Confidential / Released 183 / 247
12.2. AT+CMUT Mute Control
AT+CMUT is used to enable and disable the uplink voice muting during a voice call.
Parameter
This parameter will not be saved.
12.3. AT+CALM Mute the Ring Tone
AT+CALM is used to mute the ring tone. There is no ring tone when a call is coming.
Response
+CMUT: (list of supported<n>s)
OK
Write Command
AT+CMUT=<n>
Response
OK
If error is related to ME functionality:
+CME ERROR: <err>
AT+CALM Mute the Ring Tone
Response
+CALM: (list of supported <n>s)